oj.uz

Submission #884621

# Submission time Handle Problem Language Result Execution time Memory
884621 2023-12-07T18:34:32 Z Andrey Star triangles (IZhO11_triangle) C++14
100 / 100
 623 ms 34388 KB 
#include <bits/stdc++.h>
using namespace std;

map<long long,long long> bruh;
map<long long,long long> idk;
map<pair<long long,long long>,long long> yay;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    long long n,a,b,ans = 0;
    cin >> n;
    vector<pair<long long,long long>> haha(n);
    for(long long i = 0; i < n; i++) {
        cin >> a >> b;
        haha[i] = {a,b};
        yay[{a,b}]++;
        bruh[a]++;
        idk[b]++;
    }
    for(long long i = 0; i < n; i++) {
        a = haha[i].first;
        b = haha[i].second;
        long long c = yay[{a,b}];
        ans+=(bruh[a]-c)*(idk[b]-c);
    }
    cout << ans;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 8 ms 1860 KB Output is correct
13 Correct 8 ms 1884 KB Output is correct
14 Correct 11 ms 2392 KB Output is correct
15 Correct 140 ms 14184 KB Output is correct
16 Correct 159 ms 15188 KB Output is correct
17 Correct 148 ms 14156 KB Output is correct
18 Correct 171 ms 14236 KB Output is correct
19 Correct 552 ms 32164 KB Output is correct
20 Correct 365 ms 24404 KB Output is correct
21 Correct 623 ms 34388 KB Output is correct
22 Correct 605 ms 34300 KB Output is correct